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STMicroelectronics TN4050HP-12GY-TR
- Part No.:
- TN4050HP-12GY-TR
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
TN4050HP-12GY-TR.pdf
- Description:
- 1200 V, 40 A AUTOMOTIVE GRADE SC
- Quantity:
- Payment:
- Shipping:
Inventory:612
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Product details
Overview
TN4050HP-12GY-TR from STMicroelectronics is an automotive-grade silicon-controlled rectifier (SCR) thyristor in D²PAK package, rated for 40 A RMS on-state current, 1200 V repetitive off-state voltage, and operation up to 150 °C junction temperature. It delivers robust AC switching for on-board chargers, overvoltage crowbar protection, and solid-state relays with 1000 V/µs dV/dt immunity and 440 A non-repetitive surge capability.
For engineers reviewing the TN4050HP-12GY-TR datasheet, TN4050HP-12GY-TR pinout, TN4050HP-12GY-TR application, or TN4050HP-12GY-TR equivalent, key selection criteria include RMS current derating at elevated case temperature, gate trigger current stability across -40 to 150 °C, peak blocking voltage margin versus system transients, and thermal resistance (0.4 °C/W j-c) for conduction-cooled PCB layouts.
Technical Context
This SCR operates as a latching unidirectional power switch triggered by a positive gate pulse. Its 1.55 V max on-state voltage at 80 A and 10 mΩ dynamic resistance enable low conduction loss in high-current AC/DC rectifier bridges and phase-controlled AC switches.
Designed for automotive battery charging systems, it supports critical timing functions including controlled turn-on delay (typ. 1 µs gate trigger time) and commutation recovery (typ. 150 µs turn-off time), with guaranteed hold/latch currents stable across full temperature range and validated EFT noise immunity per AEC-Q101.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 40 A - Sustained AC load current handling at TC = 135 °C, enabling 56 A RMS AC switch design |
| VDRM / VRRM | 1200 V - Repetitive blocking voltage rating, supporting 800 V AC line applications with 50% safety margin |
| IGT (max) | 50 mA - Maximum gate trigger current required at 25 °C, defining minimum driver strength |
| dV/dt (min) | 1000 V/µs - Minimum rate of rise of off-state voltage before false triggering, ensuring noise immunity |
| Rth(j-c) | 0.4 °C/W - Junction-to-case thermal resistance, enabling direct heatsink mounting for high-power dissipation |
| Tj range | -40 to +150 °C - Full automotive operating temperature range, validated per AEC-Q101 stress testing |
| ITSM (10 ms) | 400 A - Non-repetitive surge current rating, supporting capacitor discharge and inrush current events |
Pinout & Package
The TN4050HP-12GY-TR uses a 3-pin D²PAK surface-mount package with isolated tab (pin 3). The package features a copper leadframe, epoxy molding compound compliant with UL94 V0, and optimized thermal path via the exposed drain pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Main current input terminal | High-side connection point for AC line or DC bus; carries full load current and must be routed with low-inductance layout |
| Cathode (K) | Main current output terminal | Return path for on-state current; electrically referenced to gate drive ground in most phase-control topologies |
| Gate (G) | Trigger control input | Low-energy control node requiring <50 mA pulse; sensitive to dv/dt and must be shielded from noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood environments including temperature cycling, humidity, and mechanical shock |
| 150 °C maximum junction temperature | Enables operation in high-ambient environments without derating, reducing need for oversized heatsinks |
| 1400 V non-repetitive surge rating (VDSM/VRSM) | Withstands transient overvoltages from inductive load switching or lightning-induced surges |
| ECOPACK2 compliance | Meets RoHS and halogen-free requirements for automotive supply chain traceability and environmental compliance |
| 200 A/µs critical di/dt rating | Supports fast turn-on into highly inductive loads without commutation failure |
Applications
| On-Board Charger (OBC) | Capacitor Discharge Unit |
|---|---|
Use Scenario: Bidirectional AC/DC conversion in EV on-board chargers using phase-controlled thyristor bridges. IC Role / Device Role / Timing Role: Main power switching element in half-wave or full-wave controlled rectifier stage, triggered synchronously with AC zero-crossing. Use Value: Enables precise output voltage regulation via firing angle control while sustaining 40 A RMS continuous conduction at 150 °C junction temperature. | Use Scenario: Rapid energy dump from high-voltage DC link capacitors during fault shutdown or maintenance. IC Role / Device Role / Timing Role: Crowbar device activated by overvoltage detection circuit to short-circuit bus and trigger fuse blow. Use Value: Withstands 400 A surge for 10 ms and blocks 1200 V continuously, ensuring fail-safe discharge without latch-up or thermal runaway. |
| AC Solid-State Relay | Industrial Power Supply Crowbar |
Use Scenario: Replacement for electromechanical relays in HVAC motor starters and lighting ballasts. IC Role / Device Role / Timing Role: Zero-voltage-switched AC switch controlling resistive or inductive loads up to 56 A RMS. Use Value: Eliminates contact wear and bounce, provides silent operation, and achieves >10⁶ cycle lifetime with no moving parts. | Use Scenario: Overvoltage protection in telecom and industrial SMPS where output rail exceeds safe limits. IC Role / Device Role / Timing Role: Fast-acting crowbar triggered by comparator output to clamp output and initiate shutdown. Use Value: Responds within 1 µs gate delay and sustains 1400 V non-repetitive surge, preventing downstream IC damage during transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR thyristor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH30L06D | 600 V VRRM, 30 A IT(RMS), TO-220AC package, no AEC-Q101 qualification | Limited to lower-voltage industrial supplies; lacks automotive temperature and reliability validation | Select only for cost-sensitive non-automotive designs where 1200 V blocking is not required |
| IXYS MCR100-12 | 1200 V VRRM, 100 A IT(RMS), TO-218 package, higher IGT (100 mA), no AEC-Q101 | Suitable for higher-current industrial AC switches but requires stronger gate drive and lacks automotive qualification | Choose when >40 A RMS current is needed and automotive qualification is not mandatory |
Compared with STTH30L06D and IXYS MCR100-12, the TN4050HP-12GY-TR uniquely combines AEC-Q101 qualification, 1200 V blocking, 40 A RMS rating, and D²PAK surface-mount compatibility-making it the only option qualified for automotive on-board charger and solid-state relay applications requiring automated assembly and extended temperature operation.
Availability
TN4050HP-12GY-TR is available at Aetrix Electronics and suitable for automotive on-board chargers, industrial AC solid-state relays, and overvoltage crowbar protection circuits requiring stable component supply and long-term lifecycle support.
Supply support for TN4050HP-12GY-TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power discrete technologies with vertical manufacturing capabilities.
The TN series SCR thyristors are engineered specifically for high-reliability automotive power conversion, emphasizing thermal robustness, transient immunity, and AEC-Q101-compliant manufacturing processes.
FAQ
What is the maximum allowable case temperature for continuous 40 A RMS operation?
The datasheet specifies IT(RMS) = 40 A at TC = 135 °C with 180° conduction angle. Operation above this case temperature requires linear derating per Figure 2; at TC = 150 °C, maximum RMS current drops to approximately 32 A. Thermal design must ensure case temperature remains ≤135 °C under worst-case ambient and airflow conditions.
Can TN4050HP-12GY-TR be used in bidirectional AC switching applications?
No - this is a unidirectional SCR thyristor with anode-cathode polarity; it conducts only during positive half-cycles of AC voltage. For bidirectional AC switching, two SCRs must be connected in inverse-parallel, or a TRIAC such as the ST T1035H-8 should be selected instead.
What gate drive circuitry is recommended to ensure reliable triggering across temperature?
A gate trigger pulse of ≥100 mA peak (2× IGT max), ≥10 µs width, and ≤1.3 V VGT max is recommended. Use a dedicated SCR gate driver IC (e.g., STGW30V60DF) or discrete transistor stage with local decoupling to maintain di/dt >200 A/µs and suppress noise coupling to the sensitive gate node.
Is the D²PAK tab electrically isolated from internal circuitry?
Yes - the D²PAK package features an isolated tab (pin 3) that is internally connected to the cathode (K). This allows direct thermal mounting to a heatsink without electrical isolation hardware, provided the heatsink is either floating or referenced to cathode potential in the application circuit.
TN4050HP-12GY-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Off State:
- 1.2 kV
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Gate Trigger (Igt) (Max):
- 50 mA
- Voltage - On State (Vtm) (Max):
- 1.55 V
- Current - On State (It (AV)) (Max):
- 25 A
- Current - On State (It (RMS)) (Max):
- 40 A
- Current - Hold (Ih) (Max):
- 100 mA
- Current - Off State (Max):
- 5 µA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 400A, 440A
- SCR Type:
- Standard Recovery
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
TN4050HP-12GY-TR FAQ
1.How can I place an order for TN4050HP-12GY-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for TN4050HP-12GY-TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TN4050HP-12GY-TR reliable?
The price and inventory of TN4050HP-12GY-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TN4050HP-12GY-TR is usually 5 days.
3.What payment methods are accepted for TN4050HP-12GY-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TN4050HP-12GY-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TN4050HP-12GY-TR?
TN4050HP-12GY-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TN4050HP-12GY-TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TN4050HP-12GY-TR?
For technical support, including TN4050HP-12GY-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TN4050HP-12GY-TR requirements.
6.How does Aetrix verify that TN4050HP-12GY-TR is sourced from the original manufacturer or authorized distributors?
All TN4050HP-12GY-TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TN4050HP-12GY-TR meets industry standards.
7.What is the process for return or replacement of TN4050HP-12GY-TR?
All TN4050HP-12GY-TR units undergo pre-shipment inspection (PSI). If there is an issue with TN4050HP-12GY-TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TN4050HP-12GY-TR part is unused and in its original packaging.
Return procedure for TN4050HP-12GY-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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